Your Digest for Thursday, Apr 04, 2024 09:59 AM

peripheral oedema.
Other associations
- (hyperlipidaemia and thrombotic disease may also be present)
  - Elevated LDL and TC is the most characteristic feature.Source

Internal capsule strokes are differentiated from cortical strokes by the absence of cortical deficits.
- Cortical deficits are as seizures, aphasia, agnosia, and dysgraphia, apraxia, alexia, and amnesia, neglect syndromes etc. and arm > leg weakness if weakness is present. (leg > arm weakness suggests cortical stroke, leg = arm weakness suggests internal capsule stroke.)
Typical internal capsule stroke syndromes are
1. Pure motor stroke (i.e hemiparesis)
2. Hemiparesis with ataxia
3. Clumsy hand - dysarthria
Blood supply of the internal capsule:
- Lipohyalinosis of perforating arteries is the most common cause of lacunar strokes
  LS = lenticulostriate

Part	Blood supply	Contents	Symptoms
Anterior limb	Mainly LS branches of MCA	Frontopontine fibers Anterior thalamic radiation	Confusion, agitation, dysarthria
Genu	LS branches of MCA	Corticobulbar tracts (i.e descending tracts to the cranial nerve nuclei)ra	Deficiencies of facial expression, swallowing and mastication
Posterior limb	LS Branches of MCA Anterior Choroidal artery (branch of ICA)	1. Descending motor tracts in anterior half, 2. ascending sensory relays in posterior 1/3	Pure motor stroke Mixed sensory motor stroke

hemianopic visual loss (is an anterior circulation symdrome! not posterior circulation)